KR100267559B1 - Three-electrode surface-discharge plasma display panel device and method of driving the same - Google Patents

Abstract

PURPOSE: A 3-electrode surface discharge PDP(Plasma Display Panel) is provided to be capable of widening the width of respective sustain electrode and remarkably reducing the number of total sustain electrodes by commonly using one sustain electrode in adjacent two sustain electrodes. CONSTITUTION: Second sustain electrodes(S2:S2',S2"), third sustain electrodes(S3:S3',S3") and fourth sustain electrodes(S4:S4',S4") are arrayed in parallel to each other on one side of a front substrate(11). A first dielectric layer(12) for limiting a discharge current and promoting the generation of wall charges is formed on the sustain electrodes(S2,S3,S4) so that the thickness of the dielectric layer on one side about a center of respective sections becomes thicker than that of the layer on the other side. A magnesium oxide protect film(13) for protecting the dielectric layer(12) is formed on the first dielectric layer(12).

Description

3-electrode surface discharge plasma display panel

The present invention relates to a three-electrode surface discharge plasma display panel (hereinafter, referred to as a three-electrode surface discharge PDP), and in particular, gray scale is implemented according to the ADS subfield method (Addressing and Display System sub-field method). A three-electrode surface discharge PDP.

As the modern society is called the information society, the importance of display increases with the development and increase of information processing system, and its kind is gradually diversified.

CRT (Cathode Ray Tube), which has been the most used display for a long time, has various problems such as large size, high operating voltage, and distortion of display. Recently, research and development of various flat displays having a matrix structure have been actively progressed since they are not suitable.

Among the flat panel displays, PDP (Plasma Display Panel) is in the spotlight as the next generation large screen flat panel display. The PDP is applied to a wall-mounted television, a home theater display, various monitors, etc. due to its large screen and thin thickness.

The most widely used PDP is a three-electrode surface discharge PDP, and FIG. 1 shows an overall electrode structure diagram of a 16 × 12 resolution three-electrode surface discharge PDP according to the prior art, and FIG. A cross-sectional view of one cell of the electrode surface discharge PDP is shown, and a cross-sectional view taken along the line AA ′ of FIG. 2 is shown in FIG. 3.

According to the prior art, the 16 × 12 resolution three-electrode surface discharge PDP has twelve first sustain electrodes Y _{1 to} Y ₁₂ and a second sustain electrode X arranged in parallel with each other alternately as shown in FIG. ₁ ~X ₁₂₎ and the first sustain electrodes (Y ₁ ~Y ₁₂₎ and the second sustain electrodes (X ₁ ~X ₁₂₎ and the 48 address mutually arranged in parallel so as to be perpendicular across the predetermined space, Cells are formed at each intersection of the electrodes A _{1 to} A ₄₈ , and the entire screen is composed of 48 × 12 cells in a matrix form.

In the above, the first sustain electrodes Y ₁ to Y ₁₂ and the second sustain electrodes X ₁ to X ₁₂ are composed of a transparent electrode and a metal electrode, respectively, so as to actually between the corresponding first and second transparent electrodes of each cell. Surface discharge occurs, and the metal electrode prevents the voltage drop caused by the resistance of the transparent electrode.

The configuration of each cell of the three-electrode surface discharge PDP will be described by taking the cells of the second row and the second column shown in FIGS. 2 and 3 as an example.

First, the first sustain electrode (Y ₂ : Y ₂ ′, Y ₂ ″) and the second sustain electrode (X ₂ : X ₂ ′, X ₂ ″) are formed on one surface of the front substrate 51 which is the display surface of the image. They are arranged in parallel to each other, and discharge current is discharged on the first sustain electrode (Y ₂ : Y ₂ ′, Y ₂ ″) and the second sustain electrode (X ₂ : X ₂ ′, X ₂ ″). The first dielectric layer 52 is formed to have a uniform thickness to limit and facilitate the generation of wall charges, and the first sustain electrode Y ₂ may be formed from sputtering occurring during discharge on the first dielectric layer 52. _{Y 2 ', Y 2''} ) and the second sustain electrodes (X _2: is _{X 2', X 2 ''} ) and the magnesium oxide to protect the first dielectric layer (52), (MgO) protective film 53 is formed .

The first sustain electrode in the (Y ₂₎ and the second sustain electrodes (X ₂₎ are each in the respective transparent electrodes _{(Y 2 ', X 2'} ) and the transparent electrode _{(Y 2 ', X 2'} ) above a predetermined location It is composed of the formed metal electrodes (Y ₂ ″, X ₂ ″).

Further, the address electrode A ₂ is formed on the opposite surface to the front substrate 51 among the back substrates 54 disposed in parallel with the front substrate 51 at a predetermined distance therebetween. ₂ ) a second dielectric layer 55 is formed on the discharge substrate to limit the discharge current and facilitate the generation of wall charges, and prevents inter-cell mixing and discharge space between the front substrate 51 and the rear substrate 54. First and second partitions 56a and 56b are formed to form an array, and phosphors 57 are coated on the second dielectric layer 55 and a part of the first and second partitions 56a and 56b. Discharge gas is injected into the space.

The basic driving principle of each cell of the three-electrode surface discharge PDP configured as described above is to discharge a discharge between the first sustain electrode Y ₂ and the address electrode A ₂ to form a wall charge on the first sustain electrode Y ₂ . Next, a continuous discharge is generated between the first sustain electrode Y ₂ and the second sustain electrode X ₂ to generate vacuum ultraviolet rays, and the ultraviolet rays excite the phosphor 57 to generate visible light.

On the other hand, the gray scale sphere of each cell of the three-electrode surface discharge PDP configured as described above is implemented through the number of discharges per unit time because the intensity of the discharge is difficult to adjust, and the number of discharges of each cell is 0 to every frame. When the discharge is divided into 2 ^X -1 cycles, the brightness of each cell changes according to the number of discharges during one frame, so that the entire screen has a 2 ^X gradation image, that is, one level of 0 to 2 ^X -1 levels (love) for each cell. The image is displayed.

One of the gradation implementation methods based on the above concept is the ADS subfield method, in which each cell operates in two states of on and off and implements 2 ^X gradations. By using a binary X bit system based on the above, one frame is divided and driven into X subfields having different discharge counts (ie, discharge sustain periods).

Next, the display process of the grayscale image according to one of the general ADS subfield methods will be described in more detail.

4 is a detailed configuration diagram of one frame when implementing 256 (2 ⁸ ) grayscale according to a general ADS subfield method, and FIG. 5 is a 16 × 12 shown in FIG. 1 according to a conventional driving method. A timing diagram of some driving voltage waveforms applied to each electrode of a three-electrode surface discharge plasma display panel is shown.

First, one frame is dividedly driven into eight subfields SF1 to SF8 as shown in FIG. 4 to implement 2 ⁸ gray scales, and each subfield SF1 to SF8 maintains a reset period, an address period, and discharge sustain. The drive is divided into periods.

In the above-described reset period of each subfield SF1 to SF8, OV is applied to all the address electrodes A _{1 to} A ₄₈ and the first sustain electrodes Y ₁ to Y ₁₂ as shown in FIG. 5. In one state, a writing pulse of the voltage V _{W is} applied to all of the second sustain electrodes X ₁ to X ₁₂ to provide the total first sustain electrodes Y ₁ to Y ₁₂ and the second sustain electrodes ( By causing a write discharge between X _{1 to} X ₁₂ ), wall charges are generated inside the entire cell.

Thereafter, OV is continuously applied to all of the address electrodes A _{1 to} A ₄₈ and the first sustain electrodes Y ₁ to Y ₁₂ for a predetermined time, and at the same time, the entire second sustain electrodes X ₁ to X ₁₂ . OV is applied to cause the internal wall charges of the entire cells generated by the write discharge to self erase.

In the address period of each subfield SF1 to SF8, one scan pulse of -V _S is sequentially applied to the _twelve first sustain electrodes Y ₁ to Y ₁₂ , and the digital corresponding to each cell is applied. A _first sustain electrode to which a V _S + V _A voltage is applied by selectively applying an image pulse of a V _A voltage synchronized with the scan pulse to all address electrodes A _{1 to} A ₄₈ according to an image signal By causing the address discharge to occur between the and the address electrode, the corresponding cell in which the address discharge has occurred is turned on to generate wall charge therein.

In the discharge sustain period of each of the subfields SF1 to SF8, the voltage V _A1 is applied to all the address electrodes A _{1 to} A ₄₈ , and the first and second sustain electrodes Y ₁ to Y ₁₂ and the second sustain electrode are applied. In the state where OV is applied to the fields X ₁ to X ₁₂ , the first and second sustain electrodes Y ₁ to Y ₁₂ and the second sustain electrodes X ₁ to X ₁₂ are alternately disposed with a phase difference of 180 °. Sustain pulses of the voltage V _S are respectively applied to maintain discharge and light emission of the cells turned on in the immediately preceding address period.

The application of the voltage V _A1 to the entire address electrodes A _{1 to} A ₄₈ during the discharge sustain period is performed by the address electrodes A _{1 to} A ₄₈ , the first sustain electrodes Y ₁ to Y ₁₂ , and the second voltage. This is to prevent discharge from occurring between the sustain electrodes X ₁ to X ₁₂ .

The voltage pulses V _W , V _F (discharge starting voltage), V _S , V _A , and V _A1 applied to the electrodes are V _W >> V _F > V _S and V _A > V _A1 and V _A +, respectively. Set to voltage values satisfying V _S > V _F.

Further, an image pulse applied to the address electrodes A _{1 to} A ₄₈ during the address period of each subfield SF1 to SF8 is an 8-bit digital image signal (lowest bit B ₁ to highest bit B corresponding to each cell). ₈ corresponds to one bit value, more specifically, B ₁ during the address period of the first subfield SF1, B ₂ during the address period of the second subfield SF2,. During the address period of the eighth subfield SF8, B ₈ is applied respectively.

In addition, the entire first sustain electrode during the discharge sustain period of each subfield _{(SF1~SF8) (Y 1 ~Y 12} ) and the number of sustain pulses applied to the first of the two sustain electrodes (X ₁ ~X ₁₂₎ is usually SF1 : SF2: SF3: SF4: SF5: SF6: SF7: SF8 = 1: 2: 4: 8: 16: 32: 64: 128 is set to enable 256 gray scale implementation.

As a result, when the screens of the first to eighth subfields SF1 to SF8 are sequentially configured during the one frame driving time through the detailed process described above, 256 grayscale images of one frame are displayed on the three-electrode surface discharge PDP.

However, as shown in FIG. 1, since the three-electrode surface discharge PDP according to the prior art requires two sustain electrodes for each cell configuration, the pixel -R (Red), G (Green), B (Blue) consists of 3 cells-As the number of cells increases, the width of the sustain electrode (transparent electrode) decreases, which leads to great difficulty in the manufacturing process, which makes it difficult to manufacture high-resolution panels. there was.

The present invention has been made to solve the above problems, a three-electrode surface discharge in which one sustain electrode is commonly used in two adjacent cells, the width of each sustain electrode is wider, the number of total sustain electrodes is greatly reduced The purpose is to provide a PDP.

It is also an object of the present invention to provide a three-electrode surface discharge PDP that enables accurate gray scale implementation as in the prior art on a three-electrode surface discharge PDP in which one sustain electrode is commonly used for two adjacent cells.

1 is an overall electrode structure diagram of a 16 x 12 resolution three-electrode surface discharge plasma display panel (hereinafter referred to as a three-electrode surface discharge PDP) according to the prior art.

2 is a cross-sectional view of one cell of a three-electrode surface discharge PDP according to the prior art.

3 is a cross-sectional view taken along the line AA ′ of FIG. 2.

4 is a detailed configuration diagram of one frame when implementing 256 gray scales according to a general ADS subfield method.

FIG. 5 is a timing diagram of some driving voltage waveforms applied to each electrode of the three-electrode surface discharge PDP shown in FIG. 1 according to the prior art driving method.

6 is a schematic view of the entire electrode structure of a 16 × 12 resolution three-electrode surface discharge PDP according to an embodiment of the present invention.

7 is a cross-sectional view of two adjacent cells of a three-electrode surface discharge PDP according to an embodiment of the present invention.

8 is a cross-sectional view taken along the line B-B 'shown in FIG.

9 is a view showing that the first dielectric layer of each cell shown in FIG. 7 is formed in a different shape.

10 is a timing diagram of some driving voltage waveforms applied to each electrode of the 3-electrode surface discharge PDP shown in FIG. 6 according to the driving method of the present invention.

* Explanation of symbols for main parts of the drawings

S _{1 to} S ₁₃ : sustain electrode A _{1 to} A ₄₈ : address electrode

11 front substrate 12 dielectric layer

14 back substrate 16A, 16B partition wall

In order to achieve the above object, the three-electrode surface discharge PDP according to the present invention includes a lower substrate having 48 address electrode lines formed thereon, an upper substrate arranged at a predetermined distance from the lower substrate by a partition wall, and on the upper substrate. A three-electrode surface discharge plasma display panel comprising 48 x 12 cells including thirteen first and second sustain electrode lines intersecting an address electrode line.

The first and second storage electrode lines are formed over the neighboring cells around the partition wall, and the second storage electrode is positioned on the upper side of each cell except the first storage electrode, and each cell except the thirteenth storage electrode. First dielectric electrodes are positioned on a lower side of the first dielectric layer, and a first dielectric layer is formed on the first and second sustain electrodes so that the thickness applied to each of the first and second sustain electrodes is different so that no discharge occurs on the other side. The second dielectric layer is formed on the address electrode to limit the discharge current and to generate wall charges.

The first and second dielectric layers may be coated such that the thicknesses of the left and right sides of the first and second sustain electrode lines are different from each other so as to include dielectric layers having different thicknesses in specific cells.

The dielectric layer has the largest thickness at the center of the first and second sustain electrode lines, the thickness gradually decreases toward the right side from the center, and the upper left side of the remaining electrodes on the substrate have the smallest thickness. The dielectric layer has a triangular protrusion, or the dielectric layer becomes thicker and smaller again from the center of the first and second sustain electrode lines to the right side, and is applied to have the smallest thickness on the upper left side of the remaining electrodes on the substrate. It is characterized by having an elliptical protrusion.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 6 shows an overall electrode structure diagram of a 16 × 12 resolution three-electrode surface discharge PDP according to an embodiment of the present invention, and FIG. 7 shows adjacent two of the three electrode surface discharge PDPs according to an embodiment of the present invention. A cross-sectional view of the dog cells is shown, and FIG. 8 shows a cross-sectional view along the line B-B 'shown in FIG.

The 16 × 12-resolution three-electrode surface discharge PDP is also the sixth of the 13 parallel to each other as shown in the role as keeping the electrodes (S ₁ ~S ₁₃₎ and the sustain electrode according to an embodiment of the present invention ₍₁ S ~S ₁₃₎ and has a full-screen consists of 48 × 12 gae cell in matrix form, by mutual parallel to address electrodes arranged in ₄₈ (a ₁ ~A 48) so as to be perpendicular across the predetermined space.

That is, the sustain electrode 13 (S ₁ ~S _{13) 1} part of a dotted line above the other sustain electrode other than the second sustain electrodes _{(S 1) (S 2 ~S} 13) of the (S _2-1 ~S _13-1 ) Corresponds to the second storage electrodes of the prior art, and the lower portions S _{1-2 to} S _12-2 of the remaining storage electrodes S ₁ to S ₁₂ except for the _thirteenth storage electrode S ₁₃ are Corresponds to the first sustain electrodes of the prior art.

That is, the storage electrodes S ₁ to S ₁₃ have to be wider than the first or second storage electrodes of the prior art because one storage electrode must be commonly used for two cells, unlike the prior art.

In addition, each of the sustain electrodes S _{1 to} S ₁₃ is composed of a transparent electrode and a metal electrode, so that surface discharge is actually generated between the transparent electrodes, and the metal electrode prevents a voltage drop due to the resistance of the transparent electrode.

The configuration of each cell of the three-electrode surface discharge PDP is described with reference to two cells of the second, third, fourth, and second columns shown in FIGS. 7 and 8 as an example.

First, the second sustain electrode _{(S 2: S 2 ',} S 2'') and the third holding electrode _{(S 3: S 3',} S 3 '') and the fourth holding electrode (S _4: S ₄ ', S ₄ ″) are arranged on one surface of the front substrate 11, which is the display surface of the image, in parallel with each other, and the discharge current is restricted and discharged on the sustain electrodes S ₂ , S ₃ , and S ₄ . The first dielectric layer 12 which facilitates the generation of electric charges is formed to have a thicker thickness on the other side than one side bordering the central portion of each of the sustain electrodes S ₂ , S ₃ , and S ₄ . A magnesium oxide protective film 13 is formed on the dielectric layer 12 to protect the sustain electrodes S ₂ , S ₃ , and S ₄ and the first dielectric layer 12 from sputtering occurring during discharge.

The sustain electrodes S ₂ , S ₃ , and S ₄ are transparent electrodes S ₂ ′, S ₃ ′, and S ₄ ′, and the transparent electrodes S ₂ ′, S ₃ ′, and S ₄ ′, respectively. ) metal electrode _{(S 2 '', S 3} '', respectively, formed on the center of the is composed of S ₄ '').

Further, a second address electrode A ₂ is formed on the opposite surface to the front substrate 11 among the back substrates 14 positioned in parallel with the front substrate 11 at a predetermined distance therebetween, and the address electrode A _second dielectric layer 15 is formed on (A ₂ ) to limit the discharge current during discharge and to facilitate the generation of wall charges, and to prevent inter-cell mixing between the front substrate 11 and the rear substrate 14. First and second partitions 16a and 16b are disposed to secure a discharge space, and phosphors 17 are coated on the second dielectric layer 15 and a part of the first and second partitions 16a and 16b. The discharge gas is injected into the discharge space.

Therefore, in FIG. 6, the upper portions S _{1-1 to} S _13-1 of the dotted lines of the sustain electrodes S _{1 to} S ₁₃ are thinner than the lower portions S _{1-2 to} S _13-2 . One dielectric layer 12 is formed.

Here, each of the sustain electrodes (S ₁ ~S ₁₃₎ which is different to the thickness of the first dielectric layer 12 formed on the other sustain electrode, except for the first sustain electrodes _{(S 1) (S 2 ~S} 13) The remaining portions except for the 13th sustain electrode S ₁₃ while the upper portion S _2-1 , S _3-1 ,..., S _13-1 of the dotted line cause the address discharge together with the address electrodes A _{1 to} A ₄₈ . To prevent discharge from occurring between the lower portions S _1-2 , S _2-2 ,..., S _{12-1 of the} sustain electrodes S ₁ to S ₁₂ and the address electrodes A _{1 to} A ₄₈ . to be.

In addition, the first dielectric layer 12 may have a cross-sectional shape of a portion formed thicker than other portions of a triangle shown in FIG. 7, an ellipse shown in FIG. 9, or other shapes.

A basic driving principle of each cell of the three-electrode surface discharge PDP according to the embodiment of the present invention configured as described above will be described with reference to the A cell shown in FIG. 7 as an example.

First, the second dielectric layer 12 is thin is a transparent electrode (S ₄ ') + voltage to the address electrode (A ₂₎ to - When a voltage is applied to the transparent electrodes (S _4' that is formed in order to turn on the A cell) on the address electrode (a ₂₎ in which an address discharge is formed in up and thin first dielectric layer 12 thick transparent electrode (S ₄ ') side in the liver - the wall charges + of wall charges on the side of the address electrode (a ₂₎ Each is generated.

After that, in order to indicate the ON state of the A cell-to the transparent electrode (S ₄ ′) in which the wall charges are generated, a voltage is applied to add to the voltage of the wall charges and to the remaining transparent electrodes (S ₃ ′). A positive voltage is applied to cause the sustain discharge to occur between the two transparent electrodes S ₃ ′ and S ₄ ′.

When a sustain discharge occurs in the discharge space of the A cell, an electric field of the discharge space is generated, and the trace electrons in the discharge gas are accelerated. When the accelerated electrons collide with the neutral particles of the discharge gas, the neutral particles are converted into electrons and ions. When the ionized electrons are also accelerated by the electric field and participate in collisions with the neutral particles, the neutral particles are ionized to electrons and ions at a rapid rate so that the discharge gas becomes a plasma and vacuum ultraviolet rays are generated. do.

The generated vacuum ultraviolet rays excite the phosphor 17 to generate visible light, and the visible light is emitted to the outside through the front substrate 11, thereby enabling image recognition from the outside.

However, after an address discharge occurs in the discharge space of the cell A, a voltage is applied to the transparent electrode S ₄ ′ where wall charges are generated, instead of a voltage, and a voltage is applied to the remaining transparent electrode S ₃ ′. When the voltage is applied, sustain discharge does not occur between the two transparent electrodes S ₃ ′ and S ₄ ′, so the ON state of the A cell is not displayed.

On the other hand, if the 16 x 12 resolution three-electrode surface discharge PDP according to the method described in the prior art according to the embodiment of the present invention in which each cell is driven on the same principle, a problem occurs.

For example, when all the cells are turned on, all of the address electrodes are sequentially applied with scan pulses of the -V _S voltage sequentially applied to the sustain electrodes S ₂ to S ₁₃ located in the second to thirteenth address periods of each subfield. When an image pulse having a voltage of + V _A is applied to (A _{1 to} A ₄₈ ), an address shift occurs within the discharge space of all cells, and the upper part of the dotted line S ₂ of the _second to _thirteenth sustain electrodes S ₂ to S ₁₃ . + Wall charges are generated on the side of _-1 to S _13-1 ) and-wall charges are respectively generated on the address electrodes A _{1 to} A ₄₈ .

Then, to maintain the ON state of the cell, the odd-numbered sustain electrodes S ₁ , S ₃ , S ₅ ,..., S ₁₃ are supplied with an even-numbered sustain electrode S ₂ , When + voltage (V _s voltage) is applied to S ₄ , S ₆ ,..., S ₁₂ , the even-numbered sustain electrodes S ₂ , S to which + wall charge is generated by the previous address discharge and to which + voltage is applied are applied. ₄ , S ₆ ,…, S ₁₂ , sustain discharge occurs only inside cells containing the upper dotted lines S _2-1 , S _4-1 , S _6-1 ,…, S _12-1 , and previously generated The upper dotted line (S _3-1 , S _5- ) of the odd-numbered sustain electrodes S ₃ , S ₅ ,..., S ₁₃ , and the first sustain electrode S ₁ to which voltages of opposite polarities are applied. Sustain discharge does not occur inside the cells including ₁ ,..., S _13-1 ).

Subsequently, the odd-numbered sustain electrodes S ₁ , S ₃ , S ₅ ,..., And S ₁₃ have positive voltages and the even-numbered sustain electrodes S ₂ , S ₄ , S ₆ ,. ₁₂ ) When the voltage is applied to the voltage of the same polarity as the polarity of the wall charges already generated in the upper portions S _{1-1 to} S _13-1 of the dotted lines of the entire holding electrodes S ₁ to S ₁₃ . As a result, sustain discharge occurs in the discharge space of the entire cell.

That is, when the first sustain pulse is applied in the discharge sustain period of each subfield, there is a cell in which sustain discharge does not occur, and thus there is a problem in that accurate gradation is not realized as in the prior art.

Thus, one embodiment of a three-electrode surface discharge PDP driving method according to the present invention, the sustain electrode to each of the sustain electrodes (S ₁ ~S ₁₃₎ in the even-numbered _{(S 2, S 4, S} 6, ..., S ₁₂ ) and the odd-numbered sustain electrodes S ₁ , S ₃ , S ₅ ,..., S ₁₃ , and the even-numbered sustain electrodes S ₂ , S ₄ , S ₆ ,..., S in the first address period. ₁₂ ) only the odd-numbered sustain electrodes S ₃ , S ₅ ,..., S ₁₃ are sequentially scanned except for the first sustain electrode S _{1 in} the second address period so that the even-numbered sustain electrodes S ₂ ,. S ₄ , S ₆ ,..., S ₁₂ ) cells containing the upper dotted lines (S _2-1 , S _4-1 , S _6-1 ,…, S _12-1 ) and the remaining cells of opposite polarity The wall charges are generated so that even-numbered sustain electrodes S ₂ , S ₄ , S ₆ ,..., S ₁₂ and odd-numbered sustain electrodes S ₁ , S ₃ , S ₅ ,. , each time a sustain pulse is applied alternately to the S ₁₃₎ So that the correct gray scale in one embodiment the three-electrode surface discharge PDP according to the present invention shown in Figure 6 implemented by making the discharge space in the cell body may occur a sustain discharge.

FIG. 10 is a partial timing diagram of driving voltage waveforms applied to each electrode of the 16 × 12 resolution three-electrode surface discharge PDP shown in FIG. 6 according to a driving method according to an embodiment of the present invention.

First, during the reset period of each subfield, as shown in FIG. 10, the odd-numbered sustain electrodes are applied with OV applied to all the address electrodes A _{1 to} A ₄₈ and the sustain electrodes S ₁ to S ₁₃ . (S ₁ , S ₃ , S ₅ ,..., S ₁₃ ) by applying a write pulse of the voltage V _W to generate wall charges in the discharge space of the entire cell, and then the entire address electrodes A ₁ for a predetermined time. OV is applied to ˜A ₄₈ ) and sustain electrodes S _{1 ˜} S ₁₃ so that internal wall charges of the entire cell are self-erased.

Thereafter, in the first address period, scan pulses of + V _S are sequentially applied to the even-numbered sustain electrodes S ₂ , S ₄ , S ₆ ,..., S ₁₂ according to the digital image signal corresponding to each cell. At the same time, the image pulse of the -V _A voltage synchronized with the scan pulse is selectively applied to all the address electrodes A _{1 to} A ₄₈ to simultaneously apply the scan pulse and the image pulse, that is, the V _S + V _A voltage. By causing the address discharge to occur between the applied sustain electrode and the address electrode, the corresponding cell on which the address discharge has occurred is turned on to generate wall charge therein,

In the second address period, one-by-one sequence of -V _S is applied to the odd sustain electrodes S ₃ , S ₅ ,..., S ₁₃ except for the first sustain electrode S ₁ according to the digital image signal corresponding to each cell. The sustain electrode and the address electrode to which the V _S + V _A voltage is applied by applying a scan pulse and selectively applying an image pulse of a + V _A voltage synchronized with the scan pulse to all the address electrodes A _{1 to} A ₄₈ . By causing the address discharge therebetween, the corresponding cell in which the address discharge has occurred is turned on to generate wall charges of opposite polarity to the wall charge generated in the first address period therein.

At this time, the address discharge of each cell and more particularly even-numbered sustain electrode in the upper part of the broken line _{(S 2, S 4, S} 6, ..., S 12) (S 2-1, S 4-1, S 6-1 ,..., S _12-1 and the dotted upper portions S _3-1 and S _5- between the address electrodes A _{1 to} A ₄₈ or odd-numbered sustain electrodes S ₃ , S ₅ ,..., S ₁₃ . ₁ ,..., S _13-1 ) and address electrodes A _{1 to} A ₄₈ .

In addition, the upper part of the dotted lines S _2-1 , S _4-1 , and S _{6-1 of the} even-numbered sustain electrodes S ₂ , S ₄ , S ₆ ,..., S ₁₂ after the first and second address periods. , ..., s _12-1) is - s _3, the odd-numbered sustain electrodes, wall charges _{(s 5, ..., s 13} ) upper part of dotted line (s _3-1, s _5-1, a ..., s _13-1 + Wall charges are generated respectively, and wall charges of opposite polarities are generated in the address electrodes A _{1 to} A ₄₈ , respectively.

Thereafter, in the discharge sustain period, the + V _A1 voltage is applied to all the address electrodes A _{1 to} A ₄₈ , and the odd-numbered sustain electrode is applied while OV is applied to the entire sustain electrodes S ₁ to S ₁₃ . the _{(s 1, s 3, s} 5, ..., s 13) and even the second sustain electrode + which alternately have a phase difference of 180 ° from each other in the _{(s 2, s 4, s} 6, ..., s 12) V s Sustain pulses of voltage are respectively applied to maintain the discharge and light emission of all the cells turned on in the immediately preceding address period.

At this time, the voltage having the same polarity as the wall charge generated in the upper portions S _{2-1 to} S _13-1 of the dotted lines of the remaining storage electrodes S ₂ to S ₁₃ except for the first sustain electrode S ₁ is corresponding. The phases of the sustain pulses applied to the odd sustain electrodes S ₁ , S ₃ , S ₅ ,..., S ₁₃ are applied to the even sustain electrodes S ₂ , S ₄ , S ₆ ,. S ₁₂ ) is set faster than the sustain pulse applied.

In addition, applying the + V _A1 voltage to all the address electrodes A _{1 to} A ₄₈ during the discharge sustain period discharges between the address electrodes A _{1 to} A ₄₈ and the sustain electrodes S ₁ to S ₁₃ . This is to prevent this from happening.

As described above, a positive voltage (+ V _S voltage) is applied to all odd-numbered sustain electrodes S ₁ , S ₃ , S ₅ ,..., S ₁₃ , and the even-numbered sustain electrodes S ₂ , S ₄ , S ₆ , ..., s ₁₂₎ on-voltage (OV) is applied to each when that is, the other sustaining electrode other than the first sustain electrodes (s ₁₎ (s ₂ the upper part of dotted line ~S ₁₃₎ (s _2-1 ~S _{13- When} a voltage having the same polarity as the wall charges generated in ₁ ) is applied to the corresponding storage electrodes, the voltages applied to the respective storage electrodes S _{2 to} S ₁₃ and the voltages of the wall charges already generated are added to each other. Sustain discharge can occur within the discharge space, thereby enabling accurate gray scale implementation.

In addition, the voltage pulses V _W , V _F (discharge start voltage), V _S , V _A , and V _A1 to which each electrode is applied are V _W >> V _F > V _S and V _A > V as in the prior art, respectively. Set the voltage values to satisfy _A1 and V _A + V _S > V _F.

In addition, an image pulse applied to the address electrodes A _{1 to} A ₄₈ during the first and second address periods is also one of the eight bit digital image signals (least significant bit B ₁ to most significant bit B ₈ ) corresponding to each cell. The number of sustain pulses corresponding to the number of bits and applied to all the sustain electrodes S ₁ to S ₁₃ during the discharge sustain period also depend on the gray scale to be implemented: 1: 2: 4: 8: 16: 32: 64: 128... Set the ratio to.

As described above, since the three-electrode surface discharge PDP according to the present invention has one storage electrode commonly used in two adjacent cells, the width of each storage electrode is wider than in the prior art, and thus there is no great difficulty in the manufacturing process. It becomes easier, and since the number of total holding electrodes is reduced by almost 1/2 compared with the prior art, there is an effect that the manufacturing cost is greatly reduced.

Claims (4)

A lower substrate having M address electrode lines formed thereon, an upper substrate arranged at a predetermined distance from the lower substrate by partition walls, and N + 1 first and second sustain electrode lines crossing the address electrode lines on the upper substrate; In the three-electrode surface discharge plasma display panel consisting of MxN cells comprising: The first and second storage electrode lines are formed over the neighboring cells around the partition wall, and the second storage electrode is positioned on the upper side of each cell except the first storage electrode, except for the N + 1th storage electrode. First sustain electrodes are positioned on the lower side of each cell, and a first dielectric layer is formed on the first sustain electrode and the second sustain electrode so that the thickness applied to each of the first sustain electrode and the second sustain electrode is different so that a discharge is not generated on the other. And a second dielectric layer is formed on the address electrode to limit the discharge current and to generate wall charges. The method of claim 1, The first and second dielectric layers may be coated such that the thicknesses of the left and right sides of the sustain and scan electrode lines are different from each other, and include dielectric layers having different thicknesses in specific cells. Plasma display panel. The method of claim 2, The dielectric layer has the largest thickness at the center of the first and second sustain electrode lines, the thickness gradually decreases toward the right side from the center, and the upper left side of the remaining electrodes on the substrate have the smallest thickness. A three-electrode surface discharge plasma display panel having a triangular protrusion. The method of claim 2, The dielectric layer gradually increases in thickness from the center of the first and second sustain electrode lines to the right side and then decreases again, and has an elliptical protrusion coated to have the smallest thickness on the upper left side of the remaining electrodes on the substrate. 3-electrode surface discharge plasma display panel.

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